Which of the following best describes the meaning of "Variable confounding"?
A. A variable is confounding if it complicates the researchers analysis.
B. A variable is confounding if it influences the data.
C. Two variables are confounded if they're effects on the response variable cannot be distinguished.
D. A variable is confounding if it influences other variables.
E. A variable is confounding one it has no influence over the data.
Answer: C